The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2022
Filed:
Jan. 08, 2020
Digital Voice Systems, Inc., Westford, MA (US);
Thomas Clark, Westford, MA (US);
Digital Voice Systems, Inc., Westford, MA (US);
Abstract
Encoding a sequence of digital speech samples into a bit stream includes dividing the digital speech samples into frames including N subframes (where N is an integer greater than 1); computing model parameters for the subframes, the model parameters including spectral parameters; and generating a representation of the frame. The representation includes information representing the spectral parameters of P subframes (where P is an integer and P<N) and information identifying the P subframes. The representation excludes information representing the spectral parameters of the N−P subframes not included in the P subframes. Generating the representation includes selecting the P subframes by, for multiple combinations of P subframes, determining an error induced by representing the frame using the spectral parameters for the P subframes and using interpolated spectral parameter values for the N−P subframes, where the interpolated spectral parameter values are generated by interpolating using the spectral parameters for the P subframes. A combination of P subframes is selected based on the determined error for the combination of P subframes.